"Normal" lemons are mutants. They're a hybrid of two different Citrus species, citron and bitter orange, that both look weirder than lemons. In fact, one variety of citron, Citrus medica var. sarcodactylis, is nicknamed "Buddha's hand" and looks like this:
So what it appears (to me, at least, as someone who isn't a biologist or citrus expert) is that that lemon happened to mutate again in such a way that it started partially expressing an ancestral form.
I don't know when it's gonna be and I don't make any promises, but one day you'll be browsing Lemmy minding your own business, and -- BAM! -- lemon fact. There's nothing you can do about it.
(...Well, except maybe staying away from topics in which it would be relevant to post facts about lemons. That'd probably work.)
When life gives you eldritch lemons, don’t make eldritch lemonade. Make life take the eldritch lemons back! Get mad! I don’t want your damn eldritch lemons, what the hell am I supposed to do with these? Demand to see life’s manager! Make life rue the day it thought it could give teft eldritch lemons! Do you know who I am? I’m the man who’s gonna sacrifice your family! With the eldritch lemons! I’m gonna get my engineers to invent a combustible eldritch lemon that burns your house down!
Make life take the lemons back! Get mad! I don’t want your damn lemons, what the hell am I supposed to do with these? Demand to see life’s manager! Make life rue the day it thought it could give Cave Johnson lemons! Do you know who I am? I’m the man who’s gonna burn your house down! With the lemons! I’m gonna get my engineers to invent a combustible lemon that burns your house down!
A vestige of the crucible of primordial life. Born partially of devolution, it was considered a signifier of the divine in ancient times, but is now increasingly disdained as an impurity as civilization has advanced.